此外，一个英雄必须乐观和勤奋和热衷于他的努力。

Inaddition, a hero must be optimistic and diligent and be keen on his hard work.

我并不真正热衷于政治。

I am not really interested in politics.

我并不十分热衷于中餐。

I'm not crazy about Chinese food.

他非常热衷于足球。

He just lives and breathes football.

他从7岁开始就一直热衷于马球。

He has lived and breathed polo since he was seven.

他的祖父和外公都热衷于演说。

Both his grandfathers were fired with an enthusiasm for public speaking

他热衷于服务他人，而不是追求更高的名利。

He was interested in service, not self-aggrandisement.

她本人不是个热衷于园艺的人。

She herself was not a keen gardener.

她也热衷于芭蕾舞。

She is also keen on the ballet.